# wgrib2: -vector_dir

## Introduction

Bit 5 of the flag 3.3 indicates whether vector quantities are relative to the
grid or the North/South poles.
The -vector_dir option writes out "winds(N/S)" or "winds(grids)"
depending on the value of the flag. Note there is no flag that indicates whether
the quantity is a U/V component of a vector.

## Usage

```
-vector_dir
```

### Example

```
$wgrib2 png.grb2 -vector\_dir
1:4:winds(N/S)
```

See also:

---

> Description: inv grid or earth relative winds

_Docs derived from <https://www.cpc.ncep.noaa.gov/products/wesley/wgrib2/vector_dir.html>_
